Robert J Schaefer
Engineers at Cloverleaf Dr, Boulder, CO

License number
Colorado 28827
Issued Date
Feb 5, 1993
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
3825 Cloverleaf Dr, Boulder, CO 80304

Professional information

Robert Schaefer Photo 1

Method And Apparatus For Adaptive Cartridge Retrieval And Insertion In A Storage Library Subsystem

US Patent:
5622470, Apr 22, 1997
Filed:
Apr 28, 1995
Appl. No.:
8/430586
Inventors:
Robert J. Schaefer - Boulder CO
Thomas P. Jackson - Broomfield CO
Stephen W. Graeber - Louisville CO
Richard E. Sills - Longmont CO
Assignee:
Breece Hill Technologies, Inc. - Boulder CO
International Classification:
B65G 112
US Classification:
414786
Abstract:
A method and associated apparatus within a storage library subsystem for simply adapting the motion of a robotic mechanism for moving media cartridges to allow for mechanical misalignments. When retracting a cartridge from a slot in the library subsystem, the present invention monitors a sensor in the gripper hand to verify that the cartridge is not being pulled from the gripper due to "snagging" caused by mechanical misalignment of the had with the slot. When a snag is sensed, the methods and apparatus of the present invention stop the motion, initiate robotic actions to regroup the cartridge securely, and retry the retraction with adjustments to the robotic movements and positions to avoid the snag. When inserting a cartridge into a slot in the library subsystem, the present invention monitors the progress of the servo motor controlling the robot to determine whether the motion is blocked due to mechanical misalignment of the robotic mechanism with the slot. If the robot is blocked from moving to a desired position, then the methods and apparatus of the present invention retries the insert operation with horizontal and/or vertical offsets of the robotic mechanisms to adjust for the mechanical misalignment.


Robert Schaefer Photo 2

Apparatus And Methods For Cartridge Retrieval And Insertion In A Storage Library Subsystem Including A Robotic Shuttle Having A Sole Rocker Beam

US Patent:
5815340, Sep 29, 1998
Filed:
Nov 25, 1996
Appl. No.:
8/755791
Inventors:
John A. Barkley - Longmont CO
Stephen Ward Graeber - Louisville CO
Robert John Schaefer - Boulder CO
Assignee:
Breece Hill Technologies, Inc. - Boulder CO
International Classification:
G11B 1568
US Classification:
360 92
Abstract:
A storage library subsystem comprising a frame, a robotic shuttle attached to and linearly movable relative to the frame, a media read/write device attached to the frame, and a storage media cartridge magazine attached to the frame. The robotic shuttle is provided with a plurality of ports for receipt and ejection of storage media cartridges. The media read/write device is disposed opposite a first port of the robotic shuttle at a first point of the linear movement of the robotic shuttle so that a storage media cartridge may be passed between the device and the robotic shuttle at the first point of linear movement. The magazine has at least one slot for storage of a storage media cartridge, the slot being disposed opposite a second port of the robotic shuttle at a second point of the linear movement of the robotic shuttle so that a storage media cartridge may be passed between the slot and the robotic shuttle at the second point of linear movement.


Robert Schaefer Photo 3

Snowboards And The Like Having Integrated Dynamic Light Displays Related To Snowboard Motion

US Patent:
2007019, Aug 23, 2007
Filed:
Feb 21, 2006
Appl. No.:
11/358491
Inventors:
Christopher Stone - Lafayette CO, US
Robert Schaefer - Boulder CO, US
International Classification:
A63C 5/00
US Classification:
280601000
Abstract:
Selected patterns of lights are displayed on a recreational conveyance such as a snowboard according to the motion of the board. A selection of patterns is stored in a processor memory, the motion of the board is measured (for example with accelerometers) and a pattern is selected from memory based on the measured motion. Then lights on the board are blinked on and off in the selected pattern. Accelerometer inputs are analyzed and a series of states is derived for each accelerometer axis. A series of states can be analyzed as a set to select a different pattern. Also, the magnitude of the states (such as duration, speed, or intensity) may affect the pattern selected. The process may be adaptive, so that the analyzing step further analyzes user weight or past snowboarding style to set adaptive thresholds for selecting patterns.


Robert Schaefer Photo 4

Multi-Purpose Laser/Optical Sensor In A Storage Library Subsystem

US Patent:
5661287, Aug 26, 1997
Filed:
Apr 28, 1995
Appl. No.:
8/430331
Inventors:
Robert John Schaefer - Boulder CO
Stephen Ward Graeber - Louisville CO
Paul Thomas Currin - Boulder CO
Assignee:
Breece Hill Technologies, Inc. - Boulder CO
International Classification:
G06K 710
US Classification:
253383
Abstract:
A method and associated apparatus within a storage library subsystem for utilizing a single light source in combination with a single reflectivity sensor for multiple functions within the storage library subsystem. A laser light source and reflectivity sensor are mounted adjacent one another on the moveable robotic gripper hand internal to the storage library subsystem. The multiple sensing methods and apparatus of the present invention include use of the apparatus for calibrating the robotic positioning mechanisms to permit more tolerance for manufacturing variability, use of the apparatus to sense presence or absence of a magazine or cartridge within the library, and use of the apparatus for reading and decoding barcoded labels on the face of cartridges within the library. Use of a single, simple apparatus for these multiple purposes and functions permit reduction in the complexity of the library subsystem and therefore a reduction in the associated costs.


Robert Schaefer Photo 5

Magazine For Holding Computer Data Storage Cartridges

US Patent:
5867458, Feb 2, 1999
Filed:
Nov 22, 1996
Appl. No.:
8/755478
Inventors:
John A. Barkley - Longmont CO
Stephen Ward Graeber - Louisville CO
Robert John Schaefer - Boulder CO
Assignee:
Breece Hill Technologies, Inc. - Boulder CO
International Classification:
G11B 1568, B65D 85672
US Classification:
369 36
Abstract:
A computer data storage cartridge magazine for carrying data storage cartridges from conventional "off-line" storage to a storage library subsystem where cartridges may be electronically read or written. The magazine comprises a series of horizontally arranged slots. Each slot has a front spring lever which is operated by the user to insert and remove individual cartridges and a rear locking lever which is operated by the robotic mechanisms of the library subsystem. A safety bar extends substantially the length of the magazine and is located under the rear locking levers. The safety bar acts to ensure that the rear locking levers do not become accidently depressed when the magazine is carried by the user. The safety bar is disengaged by a mated pin when the magazine is inserted into the library subsystem. The rear locking levers may then be actuated (depressed) by an arm on the robotic mechanism of the library subsystem.


Robert Schaefer Photo 6

Multi-Ported Robotic Shuttle For Cartridge Retrieval And Insertion In A Storage Library Subsystem

US Patent:
5892750, Apr 6, 1999
Filed:
Nov 22, 1996
Appl. No.:
8/755315
Inventors:
John A. Barkley - Longmont CO
Stephen Ward Graeber - Louisville CO
Robert John Schaefer - Boulder CO
Assignee:
Breece Hill Technologies, In.c - Boulder CO
International Classification:
G11B 1704, G11B 1722, G11B 1568
US Classification:
369178
Abstract:
A robotic shuttle for moving a storage media cartridge from a first location to a second location in a storage library subsystem, said robotic shuttle riding on a linear bearing surface in the storage library subsystem. The shuttle has a frame with at least two ports for receipt and discharge of the storage media cartridge. A rocker beam is rotatably attached to said frame, with one end of the beam protruding from one of the ports and the other end of the beam protruding from the other of said ports. The beam is fitted with rotating drive rollers that move the storage media cartridge when they come into contract with it. The direction of movement of the cartridge depends upon the direction of rotation of the drive rollers.


Robert Schaefer Photo 7

System And Method For Integrating Billing Information From Alternate Energy Sources With Traditional Energy Sources

US Patent:
8214270, Jul 3, 2012
Filed:
Jan 6, 2009
Appl. No.:
12/349085
Inventors:
Robert J. Schaefer - Boulder CO, US
Holden R. Caine - Boulder CO, US
Assignee:
Also Energy, Inc. - Boulder CO
International Classification:
G07F 19/00, H04M 15/00
US Classification:
705 34
Abstract:
The method and system of the present invention provides for data gathering of energy systems, calculation of billing information for the energy systems to include both traditional energy sources and renewable energy sources, and creation of various outputs to include various user interfaces applicable to overall management of the energy systems. The user interfaces can include integrated, real-time billings to a consumer that measure the cost of the primary energy as well as savings provided by renewable energy sources. The present invention also provides predictive analysis for various aspects of energy use in order to better manage particular facilities that may incorporate renewable energy sources. The gathered data and the various user interfaces enables a user to modify or adjust the use of the renewable energy sources at selected sites to maximize their impact on reducing the cost of the primary energy bill.


Robert Schaefer Photo 8

Computer Storage Device Mounting Bracket

US Patent:
D398296, Sep 15, 1998
Filed:
Nov 22, 1996
Appl. No.:
D/063041
Inventors:
Paul Thomas Currin - Boulder CO
Jason Jeffrey Krause - Golden CO
Robert John Schaefer - Boulder CO
International Classification:
1402
US Classification:
D14114